Accumulator unit



FIG. 1 is a right side view of an accumulator unit in accordance with the invention;

FIG. 2 is a front view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a perspective view thereof.

The broken lines shown in the drawings represent unclaimed subject matter and form no part of the claimed design. 

CLAIM The ornamental design for an accumulator unit, as shown and described. 